Kmart is your best bet I think, she's been spotted at multiple locations (Ryde, North Rocks, Glendale for example) and should be on shelves with Misfire & Twin Twist.
Also check the NSW Transformers Sightings thread to see if anyone spots her in the next few days, but Kmart seems to be the best option for her that I've seen.

Cheers for the info, managed to pick the last copy of her up from Kmart North Rocks